I'm so, so sorry that you were misdiagnosed and had to go through so much because of it! I've been misdiagnosed myself. In my case I was told that my gallbladder attacks were psychosomatic, when in reality they were medical in origin. I finally was properly diagnosed and had surgery for it.
I've had pseudo seizures and I am an epileptic and am not DID. So, I know that you don't have to be DID to have them and you can be epileptic and have them.
I hope my post has helped you in some way.
PM me if you I can help with any concerns you may have about being diagnosed with epilepsy. I will help in anyway I can.